Grate rod

ABSTRACT

To prolong the life of grate rods which have holders at one end for the rod holding elements of a grate, and have at the other end a support part for preferably inclined support on another rod, it is proposed that both a holder in the form of a recess and a support part be provided at each end of the rod. In this way, when the end of the rod used as the support part wears out, the rod can be turned so that its holder rests on this worn end.

The present invention relates to a grate rod with a holder at one of itsends for rod holding elements of the grate, as well as a supporting partat its other end for preferably inclined support on one end of anotherrod.

The aim underlying the present invention essentially resides inproviding a grate rod holder and support of the aforementioned typewhich ensures a long service life.

More particularly, in accordance with the present invention, both endsof the grate bar are provided with a holder means and a support part.

Advantageously, in accordance with further features of the presentinvention, the holders are formed by recesses or indentations running atleast nearly perpendicular to the longitudinal axis of the rod.

In accordance with still further features of the present invention, thesupport parts are formed by elements projecting in a plane runninglongitudinally of the rod.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a conventional grate rod holder andsupport; and

FIG. 2 is a side elevational view of a grate rod holder and supportconstructed in accordance with the present invention.

As shown schematically in FIG. 1, grate rods 1 are known which have aholder in the form of a recess at one end 3 and have a projectingsupport part 7 at the other end 5. Such grate rods 1 are supported bytheir holders at end 3 on grate rods 9, so that they rest tilted againstone another, while the supporting part 7 of one rod rests on the end ofthe previous rod 1 with holder 3. In view of their use, such grate rodsare subjected to extreme thermal stress, whereby this is especially trueof the exposed supporting parts 7, while the other end 3 of rod 1 iscovered by the previous grate bar. For this reason, such rods 1 must bereplaced often because the opposed supporting parts 7 has worn away, butit is additionally subjected to stress by stoking, which usually occursas a result of relative longitudinal displacement of every other graterod relative to the others, as indicated by S in FIG. 1.

As shown in FIG. 2, in accordance with the present invention, A rod 13has support parts 15 at each end, with the support parts 15 being formedby bending the ends of the rod 13 ina rod cross-sectional planeincluding the longitudinal axis A of the rod. A holder indentation orrecess 17 is provided on the inside of bent support parts 15, with theindentation 17, as shown at the left of FIG. 2, holding rod 13 on agrate bar 19. As a result of the symmetric arrangement of rod 13, withrespect to holding recesses or indentations 17 and the support parts 15,the rod 13, in the event of wear of one support part 15, as shownschematically at 21, can simply be turned and placed on thecorresponding second indentation recesses 17 on bar 19. As can be seen,the wear 21 of the rod end resting on support part 15 has no deleteriouseffect whatever on the use of the same part of the bar, with its recessindentation 17 for mounting on rod 19. Rod 13 is preferably made in onepiece without welding.

I claim:
 1. A grate bar for use in a furnace grate wherein a pluralityof grate bars are arranged at one of their end portions in rows on arespective grate rod and wherein said rows of bars overlap each other sothat said one of their end portions are protected from furnace wear bythe other of said end portions of said bars of a next row, said rowsbeing linearely movable forth and back on and relative to each otherpropelled by respective rods, said grate bar comprising at each endportion a link means for one of said rods and a rest surface to rest ona bar of a subsequent row, said link means and rest surfaces of said barenabling first using one of said end portions to rest on said rod whilethe other of said end portions is to rest on another bar, and after wearof said other end portion, to use each other end portion to rest on saidrod and said first end portion to rest on said another bar.
 2. A gratebar according to claim 1, wherein the overlapped grate bars areinclined.
 3. A grate bar according to claim 1, wherein the link meansare located eccentrically with regard to a midpoint between the endportions of each grate bar.
 4. A grate arrangement comprising at leasttwo grate bars and at least one grate rod, said grate bars beingprovided at each of their ends with means for holding them on a graterod and being provided at each of their ends with support means forproviding inclined support of one bar on an adjacent bar, at least oneof said bars being held at one end thereof on said grate rod and beingsupported at the other end thereof on an adjacent grate bar.
 5. A gratearrangement according to claim 4, wherein said holding means is formedby recesses running perpendicular to a longitudinal axis of said gratebars.
 6. A grate arrangement according to claim 4, wherein said supportmeans are formed by projections extending in a plane running in alongitudinal direction of said grate bars.